anonymous
  • anonymous
Given the system of equations, what is the solution? x + 2y = 7 x - 2y = -1 a. {(-8, -12)} b. {(3, 2)} c. {(-4, 6)}
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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geerky42
  • geerky42
You can "add equation" like this:|dw:1433110131529:dw|
geerky42
  • geerky42
then that 2y would cancel each other.
anonymous
  • anonymous
x=6?

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anonymous
  • anonymous
Add the x's in each eqaution, so |dw:1433110855737:dw|
anonymous
  • anonymous
so how do we find the answer?
anonymous
  • anonymous
Solve the equation 2x = 6 to get the x value
anonymous
  • anonymous
x=4?
anonymous
  • anonymous
2x = 6 What number times 2 gives you 6?
anonymous
  • anonymous
3
anonymous
  • anonymous
right. you could find y, but you don't really need to since only one of the choices has a x value of 3
anonymous
  • anonymous
thank you
anonymous
  • anonymous
you're welcome

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